Tension device



P. A. BISHOP.

TENSION DEVICE- APPLICATION FILED JUNE 10. m9.

Patented June 29, 1920.

2221677201 Peter/4.525120 FITETIV UNITED. STATES PATENT OFFICE.

PETER A. BISHOP, OF FALL RIVER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOHIMSELF AND ONE-HALF T0 ARTHUR P. BISHOP, OF FALL RIVER, MASSA-CHUSETTS.

TENSION DEVICE.

T 0 all whom it may concern:

Be it known that I, Pn'rnn A. BISHOP, a citizen of the United States,residing at Fall River, county of Bristol, Commonwealth ofMassachusetts, have invented certain new and useful Improvements inTension Devices, of which the following is a specification.

This invention relates to spooling equipment and particularly to abobbin holding tension device for yarn winding, and especially fillingwinding. The difficulty of securing satisfactory tension in winding yarnfrom a bobbin onto a spool has been heretofore recognized in the art,and various means have been devised in the effort to secure whollyefficient and satisfactory results.

In my present invention I provide a device readily adaptable to standardmachines and combining to give a uniform and effective tensionthroughout the draft from a carrier to a spool in winding.

In the form shown herein as illustrative of my invention, I haveprovided. a simple and efficient device and one capable of readyinstallation and at low cost.

Throughout the specification and drawings like reference characters areemployed to indicate corresponding parts, and in the drawings Figure Iis a side elevation showlng my device in its relation to the adjacentparts of the spooling machine.

Fig. II rear view of my tension drum,

Fig. III a face view of the same, and

Fig. IV a diagrammatic showing of the variable are of friction.

My device comprises a bobbin frame 1 1n the form of a slightly curvingarm having at one end clamping jaws 2 adapted to embrace the bobbinholder rod 3 of the spooling machine. Adjacent the jaws and on the sideof the curvature of the arm 1 is a small bracket 1 on which is mounted aconical stud 4 upon which is carried the bobbin. At the opposite end ofthe arm 1 and overhanging the axis of the stud 4 is a guide 12 notchedat 13 to receive the yarn.

Projecting from the arm 1 is an extension 7 formed with a head 7 whichis slotted at 9 to permit the longitudinal adjustment of the axis bolt15 on which is mounted a friction or braking drum 8. Between the drum 8and the head 7 is interposed a fiat arm 16 Specification of LettersPatent.

Patented June 29, 1920.

1919; Serial No. 303,019.

carrying a stud or button 10 which is circumferentially adjustablerelative to drum 8 on the axis bolt 15.

My device is adjustably mounted by a set screw 2 in proper alinementwith a spool B and its guide A. The drum 8 is adjusted longitudinally inthe slot to bring the'friction Stud 10 substantially below the guide Aand the angle of the stud adjusted to enforce the desired degree offriction.

The yarn is drawn from the bobbin through the guide notch 13 of the armand is given a half turn around the stud 10, thence over and about thedrum over the guide and to the spool B, in which it is wound in theusual manner. The amount of tension exerted by the drum depends upon theradial position occupied by the stud arm 10 which thus determines theamount of yarn or the amount of periphery of the drum on whichfrictional contact is exerted.

A spirally grooved porcelain guide knob 14 may be set on the side of thearm 1 to give slight additional friction in filling, winding and also toguide the yarn in its run from the notched guide 12 on the end of thearm 1 to the stud or button 10.

I am aware that various frictional devices have been employed, but theconstruction disclosed in my present invention is believed to be novelin its own structure and in its combination with spooling and guidingdevices in which it affords right lines of travel forthe yarn so thatthe yarn may be laid smoothly and tightly on the spools.

Various modifications in the form and construction of my device mayobviously be made, all without departing from the spirit of my inventionif within the limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

1. In a device of the class described, an arm, a bobbin support at oneside of said arm, a guide on the opposite end of said arm, and axiallyalining said bobbin spool, a friction drum mounted on said arm andadjustable longitudinally thereof, a stud arm circumferentiallyadjustable relative to said drum, and a stud on said arm parallel to theaxis of said drum, a guide disposed beyond said stud and drum, and aspooling device disposed beyond said guide.

2. In a device of the class described, an arm, means for adjustablyattaching said 3. In a Winding machine of the class de scribed, asupport, a friction drum mounted thereon, a stud arm clrcumferentiallyadjustable relative to said drum, and a stud on 1 said arm parallel tothe axis of said drum.

In testimony whereof I affix my signature inpresence of two Witnesses.

PETER A. BISHOP. Vitnesses J OHN T. CoUenLIN, ARTHUR PETER BISHOP.

